merge defect grammar.json

{
  "MT": {
    "full_total": 7290,
    "D_a_600": -990,
    "D_600_950": 4320,
    "D_950_c": 4320,
    "D_a_1550": 0,
    "D_1550_c": -990,
    "D_a600_950": 5310
  },
  "LXX": {
    "full_total": 12230,
    "D_a_600": 0,
    "D_600_950": 4320,
    "D_950_c": -1710,
    "D_a_1550": 0,
    "D_1550_c": -7020,
    "D_a600_950": 4320
  },
  "SP": {
    "full_total": 5690,
    "D_a_600": 0,
    "D_600_950": 4320,
    "D_950_c": 4320,
    "D_a_1550": 0,
    "D_1550_c": 0,
    "D_a600_950": 4320
  }
}